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Star Trek: The Original Series episode guides - All TOS episodes rated, reviewed

In those days before the Federation had continuity, there was Star Trek: The Original Series. Watch the TOS stories in any other you wish; it rarely matters, as essentially every single episode in TOS is a bottle episode. Ultimately, however, many TOS episodes are retconned into prequel stories (e.g. “The Menagerie”, “Space Seed”, “City on the Edge of Forever”), sequels (e.g. “Mirror Mirror”) or even crossovers (“The Trouble with Tribbles”) for the other series and movies.

star trek original series episode guide

Star Trek: The Original Series – Season 2 episode guide

star trek original series episode guide

Star Trek: The Original Series – the seaons, the key episodes

Season 1 – In the 1960s, TV was a different beast. Serialization (and thus continuity) was essentially non-existent. Each story plays out over a single episode only (with one exception in three years of Star Trek), thereby not allowing for much character development each season of Star Trek’s original run is really barely indistinguishable from another – but at lest that means that season 1 isn’t filled with the “growing pains” every other ST series goes through. The biggest highlights in Star Trek’s first year has got to be “The Menagerie” (episode #s 11 and 12), an eerie story of Captain Kirk’s doomed mentor Captain Pike, and “City on the Edge of Forever” (#29), a neat twist on the traditional “preserve the past” time travel tale. Also of note: “Space Seed” (#22), the introduction of Star Trek II baddie Khan.

Season 2 – Ensign Chekov joins the bridge crew for season 2, which manages to have some fun in the explicitly comic “Trouble with Tribbles” (#15) and the absolutely bananas “Assignment: Earth” (#26). And Spock fans dig on “Amok Time” (#1) and Journey to Babel (#10) for the info doled on that wacky Vulcan culture.

Season 3 – As mentioned above, a fan campaign saved Star Trek for a third series, but NBC executives were not enthused about supporting the marginally successful series and cut the show’s operating budget in half. However, Star Trek Guide must say that tripling the budget could not save scripts like those for “Spock’s Brain” (Can all Vulcans live without a brain or just Spock?), “Specter of the Gun” (Scotty’s dead because he *thinks* he’s dead?) and “The Savage Curtain” (Kirk, Spock, Vulcan hero Surak and Abe Lincoln vs. Genghis Khan, Klingon Empire founder Kahless, 21st-century Earth dictator Mr. Green – who did it in the kitchen with a revolver – and fuzzy chick Zora?) Dude.

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Walter Koenig, Leonard Nimoy, William Shatner, James Doohan, DeForest Kelley, George Takei, and Nichelle Nichols in Star Trek (1966)

In the 23rd Century, Captain James T. Kirk and the crew of the U.S.S. Enterprise explore the galaxy and defend the United Federation of Planets. In the 23rd Century, Captain James T. Kirk and the crew of the U.S.S. Enterprise explore the galaxy and defend the United Federation of Planets. In the 23rd Century, Captain James T. Kirk and the crew of the U.S.S. Enterprise explore the galaxy and defend the United Federation of Planets.

  • Gene Roddenberry
  • William Shatner
  • Leonard Nimoy
  • DeForest Kelley
  • 277 User reviews
  • 99 Critic reviews
  • 16 wins & 31 nominations total

Episodes 80

Star Trek | Retrospective

Photos 1999

Robert Walker Jr. in Star Trek (1966)

  • Captain James Tiberius 'Jim' Kirk …

Leonard Nimoy

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DeForest Kelley

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George Takei

  • Nurse Chapel …

John Winston

  • Ensign Freeman …

Jay D. Jones

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Bart La Rue

  • Announcer …

Barbara Babcock

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Stellar Photos From the "Star Trek" TV Universe

Nichelle Nichols and Sonequa Martin-Green at an event for Star Trek: Discovery (2017)

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Star Trek: The Next Generation

Did you know

  • Trivia In the hallways of the Enterprise there are tubes marked "GNDN." These initials stand for "goes nowhere does nothing."
  • Goofs The deck locations for Kirk's Quarters, Sickbay and Transporter Room vary (usually between decks 4-7) throughout the series.

Dr. McCoy : "He's dead, Jim."

  • Crazy credits On some episodes, the closing credits show a still that is actually from the Star Trek blooper reel. It is a close-up of stunt man Bill Blackburn who played an android in Return to Tomorrow (1968) , removing his latex make up. In the reel, He is shown taking it off, while an off-screen voice says "You wanted show business, you got it!"
  • Alternate versions In 2006, CBS went back to the archives and created HD prints of every episode of the show. In addition to the new video transfer, they re-did all of the model shots and some matte paintings using CGI effects, and re-recorded the original theme song to clean it up. These "Enhanced" versions of the episodes aired on syndication and have been released on DVD and Blu-Ray.
  • Connections Edited into Ben 10: Secrets (2006)
  • Soundtracks Star Trek Music by Alexander Courage

User reviews 277

  • Dec 27, 2008
  • How do they maintain Gravity on the the U.S.S. Enterprise ? .
  • All aliens on all planets speak the English language?
  • What does "TOS" mean?
  • September 8, 1966 (United States)
  • United States
  • Star Trek: The Original Series
  • Backlot, Culver Studios - 9336 W. Washington Blvd., Culver City, California, USA
  • Desilu Productions
  • Norway Corporation
  • Paramount Television
  • See more company credits at IMDbPro

Technical specs

  • Runtime 50 minutes

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